Searches a PHP Class for declared properties, uses and implicit properties. Not overly elegant, but scratched an annoying itch!

php_properties.rb

#!/usr/bin/env ruby

declared_properties = []
properties = []
implicit_properties = []

if ARGV[0].to_s.strip.length == 0
	puts 'No filename specified.'
	exit
end

if ! File.exists? ARGV[0]
	puts 'File does not exist.'
	exit
end

begin
	file = File.new( ARGV[0] , "r")
	while (line = file.gets)

		# Declared properties
		matches = line .match /((public\s*|private\s*|protected\s*|var\s*)\s*|static\s*)(\$[a-zA-Z0-9\_]*)/
		if matches
			if( ! declared_properties.include? matches[3] )
				declared_properties << matches[3]
			end
		end

		# Match uses of properties
		matches = line.match /(\$this-\>|self::)([a-zA-Z0-9_\-]*)[\s,+-=*\/{]/
		if matches
			if( ! properties.include? "$#{matches[2]}" )
				properties << "$#{matches[2]}"
			end
		end

	end
	file.close

	properties.each do |property|
		if( ! declared_properties.include? property )
			implicit_properties << property
		end
	end

	puts "== Declared Properties =="
	puts declared_properties
	puts "\n== Discovered Properties =="
	puts properties
	puts "\n== Implicit Properties =="
	puts implicit_properties


rescue => err
	puts "Exception: #{err}"
	err
end